Improvement in shields for gas-burners



I. W. SEALER. Gas-Burner Shade.

No. 107,824. Patented Sept. 27,1870.

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a To whom it may concern IRA; W.SHALER,QOF BROOKLYN, NEW-roar.

Letters Patent No. 107,824, dated September 27, 1870.

{IMPROVEMENT IN SHIELDS FOR GAS'BURNERS.

The Schedule referred to in these Letters Patent and making part of the same.

Be it known that I, IRA W. SEALER, of Brooklyu, in the county of Kings and State of New York,

have invented certain new and useful Improvements in Regulating, Steadying, and Intensifying the Flame, of Illuminating Gas, of which the following' is a spe'ci fication. i

The object of my invention is to intensify and prevent theflickering of the flame of illuminating gas,whether ordinary coal-gas,.o'r gas produced by 1 impregnating air with hydrocarbon vapor; and

It relates especially to the burning of such gases in an ordinary fish-tail or bats-wing? burner.

: In the argand burner a round flame is produced,

. with 'a central draught; "but,..while. the light is in'- tensified and steadied, thereis an intense heat generated, which is oftentimes unpleasant, and the con- 1 sumption of gas is yery great, compared with the ordinary burner, in which a flat broad flame is produced. v

My invention, as above stated, is directed to the producing-of a better light from a burner of the latter kind; and to this end,

It consists inthe employment, with the burner,

of an adjustable transparent or translucent shield,. shaped and-constructed ashereinafter specified, so as.

to properly direct the currents of air upon the flame,

and to intensify the light which passes through the shield. l g r The nature of my invention will be readily understood by reference to the accompanying drawing, in which a v T Figure 1 is a perspective view of the burner, with my improved shield applied to the same.

a 'Figure2 is a longitudinal vertical central section of the same. I

Figure 3 is a top viewof the glass shield. The burner A is the'ordinary bats-wingorfishtail burner, andneeds no further description. The

flame produced'bythe gas issuing from the burner is a flat broad flam'e, in shape approximating that of afish-tail or bats wing, whence the burner derives its name, and this flame is very apt, under 0 ordinarycircumstances, to flicker, and does notgive all the light which might be produced were it properly supplied with oxygen.

To prevent the flickering, an d td produce perfect combustion, 1 employ-a shield, B, of glass, or'other transparent or translucent material, shaped as shown in the drawing, so as to approximate. in form to the shape of the dark or-central portion of the flame, which is composed of gas, either unconsumed or ina state of imperfect-combustion. 1

The shield, at its base, is contracted, and oi' cylindrical form, and it thence widens on two sides "toward its upper end, so that its top or month shall have an'elliptical shape, as shown plainly in figs. l and 3, aid the upper. end of the shield is curved on the longer line 8 'of the ellipse, as shown at a, fig. 2, so that thecentral 'portion of the mouthv will be higher than the ends.

The elliptical form of the glass at the top is absolutely necessary-to properly shield the flame, and, at the same time, supply it with air; and it is quite as necessary, in order reproduce the best results,

and to direct the air, so that it may properly impinge against the flame, that the shield should also be drawn in and contracted at its lower end, as shown.

I also find, by careful experiment that a better flame is produced by shaping" the top as at it than would be the case were the line a a straight line.

This shield, when applied to the burner, should be so adjusted that its top should be on about a line-with the dividing line between the dark and by employing a holder, 7), in which the base of the shield is held in the ordinary way, and which is united by arms or a frame with a central socket or SCI'BW-rtlll'fld out upon the burner, as seen in fig. 2.

By means of this screw-adj ustment, the shield can be raised or lowered, and accurately adjusted in the position which it should occupy with relation to the flame.

and outer surfaces of the sides of the shield convex, as shown at d, figsnl and 3.

At least one-half of the flame is above the top of the shield, as abovestated, and the light is thus gen erally difi'used throughout the room or other place 'flected downward through these peculiarlyformed sides of the shield, which act upon the same principle as magnifying-glasses, and serve to intensify and increase the light. i

By careful and long-continued experiment, I have found that a burner provided with myim provedshield will, with a consumption of from four and one-half to five feet of gas per hour, give as good or a better light than an argand burner consuming eight or nine feet of gas in the same time. The light is perfectly steady also, and the disagreeable flickering noticed in burning gas, especially gas made from hydrocarbon vapor, is entirely prevented.

ner in which the same is or may be carried into eflect,

chimneys of elliptical shape,-of the same size from top light portionsof the flame, whatever the size of the flame may be, and, to this end, I make it adjustable sleeve, 0, having afcmale screw, which fits a male In order to intensify the light, I make the'innen where the burner is used, but thelight is also re- Having now described my invention, and the man-' I would state that I am aware that short adjustable and bottom, have been used with gas-burners, and

this, therefore, I do not claim; but

What I do claim, and desire to secure by Letters Patent, is

1. An adjustable shield of glass, or other transparent or translucent material, having its body and upper edges, or top, shaped as herein shown and described, in combination with a gas-burner, substantially as and for the purposes set forth.

2. An adjustable shield for gas-burners, having its bodyaud upper edges, or top, shaped as herein specified, and its sides made convex upon their inner and .outer surfaces, as and for ,the purposes shown and set forth.

' In testimony whereof I have signed my name to this specification before two subscribing witnesses. IRA W. SEALER. Witnesses:

W. BAILEY, WM. H. MCOABE. 

